Enhanced Gas Sensing Performance of rGO Wrapped Crystal Facet-Controlled Co3O4 Nanocomposite Heterostructures

doi:10.1021/acs.jpcc.2c00598

	Enhanced Gas Sensing Performance of rGO Wrapped Crystal Facet-Controlled Co3O4 Nanocomposite Heterostructures
	Yu, Ting 1; Li, Xin 1; Chen, Bin 2,3,4; Yang, Yanxing 5; Xu, Keng 1; Liu, Yuan 1; Gong, Wufei 1; Yuan, Cailei 1; Yang, Yong 1
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2022-03-17
卷号	126
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.2c00598
通讯作者	Yang, Yong(yyang@jxnu.edu.cn)
英文摘要	Crystal facet engineering and graphene modification are both effective means to improve the gas sensing performance of metal oxide semiconductors (MOSs) currently. However, research on the crystal facet effect and synergistic effect of graphene modification of p-type MOS sensors is relatively lacking. Here, p-type Co3O4 nanocrystals with controlled crystal facets ({112} and {100}) were in situ wrapped in the two-dimensional (2D) nanosheet network of graphene. It was found that bare {112} facets showed a significantly higher triethylamine sensing performance than {100} facets, implying a strong crystal facet effect. Interestingly, the triethylamine sensing performance of {112} facets was significantly improved after rGO modification, while the performance improvement of Co3O4 {100} was limited after rGO modification. Further study suggested that {112} facets contained more active Co3+ species and chemically adsorbed oxygen species than {100} facets, which promoted the adsorption of triethylamine and the subsequent sensing reaction. In addition, the strong electronic interaction between Co3O4 {112} crystal facets and rGO promoted efficient charge exchange through the heterogeneous interface. This work provides a new way to improve the gas sensing performance of Co3O4 through the synergistic effect of crystal facet engineering and graphene modification.
资助项目	Natural Science Foundation of China[51962009] ; Natural Science Foundation of China[61664005] ; Natural Science Foundation of China[62061020] ; Natural Science Foundation of China[51871115] ; Project of Academic and Technological Leaders in Jiangxi Province[20204BCJ23004] ; Project of Academic and Technological Leaders in Jiangxi Province[20212BCJ23018] ; Natural Science Foundation of Jiangxi Province of China[20192BAB206011] ; Natural Science Foundation of Jiangxi Province of China[20202BABL202021] ; Natural Science Foundation of Jiangxi Province of China[20202BAB212008] ; Hefei National Laboratory for Physical Sciences at the Microscale[KF2020109] ; Collaborative Innovation Program of Hefei Science Center, CAS[2020HSC-CIP013]
WOS关键词	TOTAL-ENERGY CALCULATIONS ; NANOSHEETS ; NANOSTRUCTURES ; NANOCRYSTALS ; EFFICIENCY ; OXIDE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000776247200017
资助机构	Natural Science Foundation of China ; Project of Academic and Technological Leaders in Jiangxi Province ; Natural Science Foundation of Jiangxi Province of China ; Hefei National Laboratory for Physical Sciences at the Microscale ; Collaborative Innovation Program of Hefei Science Center, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128201]
专题	中国科学院合肥物质科学研究院
通讯作者	Yang, Yong
作者单位	1.Jiangxi Normal Univ, Sch Phys Commun & Elect, Jiangxi Key Lab Photoelect & Telecommun, Jiangxi Key Lab Nanomat & Sensors, Nanchang 330022, Jiangxi, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, HFIPS, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, HFIPS, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 5.New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA
推荐引用方式 GB/T 7714	Yu, Ting,Li, Xin,Chen, Bin,et al. Enhanced Gas Sensing Performance of rGO Wrapped Crystal Facet-Controlled Co3O4 Nanocomposite Heterostructures[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2022,126.
APA	Yu, Ting.,Li, Xin.,Chen, Bin.,Yang, Yanxing.,Xu, Keng.,...&Yang, Yong.(2022).Enhanced Gas Sensing Performance of rGO Wrapped Crystal Facet-Controlled Co3O4 Nanocomposite Heterostructures.JOURNAL OF PHYSICAL CHEMISTRY C,126.
MLA	Yu, Ting,et al."Enhanced Gas Sensing Performance of rGO Wrapped Crystal Facet-Controlled Co3O4 Nanocomposite Heterostructures".JOURNAL OF PHYSICAL CHEMISTRY C 126(2022).